Algebra 1: Common Core (15th Edition)

by
Charles, Randall I.

Answer

The length of AC is 24.

Work Step by Step

The problem states that the two triangles are similar triangles. This means that all of the sides are proportional. We will call x the side that we want to find. Thus, we set up the equation: $x/18=16/12$. We multiply both sides of the equation by 18 to obtain that x=24.